Direct Attached Storage (DAS) is a dedicated digital storage device attached directly to a server or PC via a cable. Advanced Technology Attachment (ATA), Serial Advanced Technology Attachment (SATA), eSATA, Small Computer System Interface (SCSI), Serial Attached SCSI (SAS), and Fibre Channel are the main protocols used for DAS connections. The... Read more
HyperText Transfer Protocol (HTTP) is an application-layer protocol used primarily on the World Wide Web. HTTP uses a client-server model where the web browser is the client and communicates with the webserver that hosts the website. The browser uses HTTP, which is carried over TCP/IP to communicate to the server and retrieve Web content for the user.
HTTP is a widely used protocol and has been rapidly adopted over the Internet because of its simplicity. It is a stateless and connectionless protocol.
Although HTTP's simplicity is its greatest strength it is also its main drawback. As a result, the HyperText Transfer Protocol - Next Generation (HTTP-NG) project has emerged as an attempt to replace HTTP. HTTP-NG promises to deliver a much higher performance and additional features to support efficient commercial applications in addition to simplifying HTTP's security and authentication features. Some of HTTP-NG's goals have already been implemented in HTTP/1.1, which incorporates performance, security and other feature improvements to its original version HTTP/1.0. A basic HTTP request involves the following steps:
There are two versions of HTTP, version HTTP/1.0 and the latest version HTTP/1.1. The change made in the revision was mainly in the connection for each request and response transaction. In its former version, a separate connection was needed. In the later version, the connection can be reused multiple times.
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